US20150103761A1 - Method and apparatus for random access in a system wherein user equipment with different operating bandwidths coexist - Google Patents

Method and apparatus for random access in a system wherein user equipment with different operating bandwidths coexist Download PDF

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Publication number
US20150103761A1
US20150103761A1 US14/383,814 US201314383814A US2015103761A1 US 20150103761 A1 US20150103761 A1 US 20150103761A1 US 201314383814 A US201314383814 A US 201314383814A US 2015103761 A1 US2015103761 A1 US 2015103761A1
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United States
Prior art keywords
preamble
user equipment
user equipments
mhz
base station
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Abandoned
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US14/383,814
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English (en)
Inventor
Yu Chen
Sigen Ye
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Alcatel Lucent SAS
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Alcatel Lucent SAS
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Publication of US20150103761A1 publication Critical patent/US20150103761A1/en
Assigned to ALCATEL LUCENT reassignment ALCATEL LUCENT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YE, SIGEN, CHEN, YU
Abandoned legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H04W74/0838—Random access procedures, e.g. with 4-step access using contention-free random access [CFRA]

Definitions

  • the present invention relates to a communication system and, more particularly, to a method and apparatus for random access.
  • MTC Machine Type Communication
  • the preamble is transmitted in the six resource blocks of the center band of the system bandwidth, thus a base station can receive the preambles from the respective user equipment without difficulty.
  • the communication bandwidth used to transmit this message has no limitation, thus the message may appear in anywhere of the whole system bandwidth, in addition, the base station does not know the communication bandwidth supported by the user equipment at this moment.
  • the narrow band user equipment for example, MTC user equipment only supports the limited communication bandwidth, such as 1.4 MHz. Thus, the narrow band user equipment may not receive the message from the base station, thereby cannot accomplish the access procedure. Therefore, in the case of the wide system bandwidth, how can the communication of the narrow band user equipment be supported simply and efficiently is a challenging problem.
  • the defect exists in the prior art is that, the narrow band user equipment, for example, MTC user equipment, may not receive the message from the base station during the random access procedure, thereby cannot realize the access procedure.
  • the narrow band user equipment for example, MTC user equipment
  • a method for proceeding random access in a base station wherein the user equipment is served by the base station, the method comprises the following steps: A. configuring multiple preamble groups and configuring at least one preamble for the respective preamble group according to a predetermined condition; B. broadcasting preamble configuration information to the respective user equipment, the preamble configuration information including the information associated with the respective preamble group; C. receiving a preamble from the user equipment; D. determining the communication bandwidth supported by the user equipment according to the received preamble; and E. proceeding the further communication with the user equipment within the communication bandwidth supported by the user equipment.
  • the information associated with the respective preamble group includes for example, how many preamble groups to which the base station has configured the preamble; which kinds of the communication bandwidth of the user equipment each preamble group is suitable for respectively; which preambles are in each preamble groups.
  • the step A includes: configuring two preamble groups, which are used for wide band user equipments and narrow band user equipments respectively, and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • a base station can configure the preambles to two preamble groups, which are suitable for wide band user equipments and narrow band user equipments respectively, thereby the wide band user equipments and the narrow band user equipments can select the corresponding preamble group.
  • the step A includes: configuring seven preamble groups, which are used for non-contention random access user equipments, 1.4 MHz user equipments, 3 MHz user equipments, 5 MHz user equipments, 10 MHz user equipments, 15 MHz user equipments and 20 MHz user equipments, and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • a base station can configure the preambles to seven preamble groups, which are suitable for the user equipments with the different communication bandwidth respectively, thereby different user equipments can the corresponding preamble group.
  • the predetermined condition includes at least any one of the followings: the type of the user equipment in the coverage of the base station, the amount of the respective type of the user equipment, the communication requirement of the user equipment and system bandwidth.
  • the base station can configure more preambles for the preamble group used for the 5 MHz user equipments.
  • the base station may not configure the preamble group used for the 10 MHz user equipments.
  • the base station may configure the preamble groups flexible to meet the specific demand.
  • a method for proceeding random access in a user equipment wherein the user equipment is served by a base station, the method comprises the following steps: a. receiving preamble configuration information from the base station, the preamble configuration information including the information associated with the respective preamble group; b. selecting the corresponding preamble group according to the received preamble configuration information and the communication bandwidth supported by the user equipment itself, and selecting a preamble from the selected preamble group randomly; c. transmitting the selected preamble to the base station; and d. proceeding the further communication with the base station within the communication bandwidth supported by the user equipment.
  • the information associated with the respective preamble group includes for example, how many preamble groups to which the base station has configured the preamble; which kinds of the communication bandwidth of the user equipment each preamble group is suitable for respectively; which preambles are in each preamble groups.
  • each preamble group is configured with at least one preamble.
  • the wide band user equipments and the narrow band user equipments can select the corresponding preamble group respectively.
  • each preamble group is configured with at least one preamble.
  • different user equipments can select the corresponding suitable preamble group respectively.
  • an apparatus for proceeding random access in a base station wherein the user equipment is served by the base station, the apparatus comprises: a configuring means, for configuring multiple preamble groups and configuring at least one preamble for the respective preamble group according to a predetermined condition; a broadcasting means, for broadcasting preamble configuration information to the respective user equipment, the preamble configuration information including the information associated with the respective preamble group; a first receiving means, for receiving a preamble from the user equipment; a determining means, for determining the communication bandwidth supported by the user equipment according to the received preamble; and a first communicating means, for proceeding the further communication with the user equipment within the communication bandwidth supported by the user equipment.
  • the information associated with the respective preamble group includes for example, how many preamble groups to which the base station has configured the preamble; which kinds of the communication bandwidth of the user equipment each preamble group is suitable for respectively; which preambles are in each preamble groups.
  • the configuring means is used for configuring two preamble groups, which are used for wide band user equipments and narrow band user equipments respectively, and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • the configuring means is used for configuring seven preamble groups, which are used for non-contention random access user equipments, 1.4 MHz user equipments, 3 MHz user equipments, 5 MHz user equipments, 10 MHz user equipments, 15 MHz user equipments and 20 MHz user equipments, and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • an apparatus for proceeding random access in an user equipment wherein the user equipment is served by a base station, the apparatus comprises: a second receiving means, for receiving preamble configuration information from the base station, the preamble configuration information including the information associated with the respective preamble group; a selecting means, for selecting the corresponding preamble group according to the received preamble configuration information and the communication bandwidth supported by the user equipment itself, and selecting a preamble from the selected preamble group randomly; a transmitting means, for transmitting the selected preamble to the base station; and a second communicating means, for proceeding the further communication with the base station within the communication bandwidth supported by the user equipment.
  • the communication of the narrow band user equipments for example, MTC user equipment
  • the application of the narrow band user equipment has been improved, which enables the narrow band user equipments to access the wide band system.
  • FIG. 1 illustrates a flowchart of the random access method according to an embodiment of the present invention
  • FIG. 2 illustrates the block diagram of the apparatus for proceeding random access on the base station side and the user equipment side according to an embodiment of the present invention
  • FIG. 1 illustrates a flowchart of the random access method according to an embodiment of the present invention.
  • step S 21 the base station configures multiple preamble groups and configures at least one preamble for the respective preamble group according to a predetermined condition.
  • the base station could configure the preamble groups according to the type of the user equipment in the coverage of the base station and the amount of the respective type of the user equipment.
  • the base station may configure the preambles to two preamble groups, which are used for wide band user equipments and narrow band user equipments respectively.
  • the base station may configure the preambles to the preamble groups, which are used for non-contention random access user equipments, 1.4 MHz user equipments, 3 MHz user equipments, 5 MHz user equipments, 10 MHz user equipments, 15 MHz user equipments and 20 MHz user equipments.
  • the base station could configure the preamble group used for this type of the user equipment correspondingly. For example, when the amount of 5 MHz user equipments in the coverage of the base station is considerable, the base station could configure more preambles for the preamble group used for the 5 MHz user equipment. However, when the amount of 10 MHz user equipments in the coverage of the base station is fewer, the base station could configure fewer preambles for the preamble group used for the 10 MHz user equipment.
  • the base station may not configure the preamble group used for this type of the user equipments. That is, based on the amount of a certain type of the user equipments in the coverage of the base station, the base station could determine the amount of the preamble in each preamble group.
  • the base station could configure the preamble groups according to the current available system bandwidth. For example, if the system bandwidth could support 20 MHz user equipment, the base station could configure the preamble group used for 20 MHz user equipments. Preferably, the base station could configure the preamble group used for the non-contention random access user equipments according to the communication requirement of the respective user equipment.
  • the base station could configure and adjust multiple preamble groups, and determine the amount of the preambles in each preamble group.
  • the base station broadcasts preamble configuration information to the respective user equipment, the preamble configuration information including the information associated with the respective preamble group.
  • the user equipment could obtain the detail configuration of each preamble, for example, such as how many preamble groups to which the base station has configured the preamble; which kinds of the communication bandwidth of the user equipment each preamble group is suitable for respectively; which preambles are in each preamble groups.
  • This broadcast step could be accomplished by using system information block for example.
  • step S 23 the user equipment selects the corresponding preamble group according to the received preamble configuration information and the communication bandwidth supported by the user equipment itself, and selecting a preamble from the selected preamble group randomly. For example, if the communication bandwidth supported by the user equipment is 1.4 MHz, the user equipment will select the preamble group used for the 1.4 MHz user equipments, and further select a preamble therefrom. If the communication bandwidth supported by the user equipment is 5 MHz, the user equipment will select the preamble group used for the 5 MHz user equipments, and further select a preamble therefrom.
  • step S 24 the user equipment transmits the selected preamble to the base station.
  • step S 25 the base station determines the communication bandwidth supported by the user equipment according to the received preamble. Specifically, for example, the base station receives the preamble from a 1.4 MHz user equipment, then the base station can detect which preamble group this preamble belongs to, thus the base station can determine the communication bandwidth supported by the user equipment.
  • a base station can receive the preambles from the respective user equipment without difficulty, including the preamble from the 1.4 MHz user equipments.
  • the base station proceeds the further communication with the user equipment within the communication bandwidth supported by the user equipment.
  • the base station has determined the communication bandwidth of the user equipment, for example, a MTC user equipment is 1.4 MHz, the base station will schedule the further messages, such RAR to this communication bandwidth, thereby the 1.4 MHz user equipment could receive the further message from the base station, thus the further communication with the base station could be implemented without difficulty.
  • the collision probability of RACH is given as follows:
  • ⁇ is the access intensity
  • M is the total number of the user equipments
  • T is the arrival duration for testing
  • g is the number of the preambles in a specific preamble group
  • N is the configured number of the subframes pro second
  • n is the number of the preambles used for non-contention random access.
  • FIG. 2 illustrates the block diagram of the apparatus for proceeding random access on the base station side and the user equipment side according to an embodiment of the present invention.
  • the configuring means 101 is used for configuring multiple preamble groups and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • the broadcasting means 102 is used for broadcasting preamble configuration information to the respective user equipment, the preamble configuration information including the information associated with the respective preamble group.
  • the first receiving means 103 is used for receiving a preamble from the user equipment.
  • the determining means 104 is used for determining the communication bandwidth supported by the user equipment according to the received preamble.
  • the first communicating means 105 is used for proceeding the further communication with the user equipment within the communication bandwidth supported by the user equipment.
  • the configuring means 101 is used for configuring two preamble groups, which are used for wide band user equipments and narrow band user equipments respectively, and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • the configuring means 101 is used for configuring seven preamble groups, which are used for non-contention random access user equipments, 1.4 MHz user equipments, 3 MHz user equipments, 5 MHz user equipments, 10 MHz user equipments, 15 MHz user equipments and 20 MHz user equipments, and configuring at least one preamble for the respective preamble group according to a predetermined condition.
  • the predetermined condition includes at least any one of the followings: the type of the user equipment in the coverage of the base station, the amount of the respective type of the user equipment, the communication requirement of the user equipment and system bandwidth.
  • the second receiving means 201 is used for receiving preamble configuration information from the base station, the preamble configuration information including the information associated with the respective preamble group.
  • the selecting means 202 is used for selecting the corresponding preamble group according to the received preamble configuration information and the communication bandwidth supported by the user equipment itself, and selecting a preamble from the selected preamble group randomly.
  • the transmitting means 203 is used for transmitting the selected preamble to the base station.
  • the second communicating means 204 is used for proceeding the further communication with the base station within the communication bandwidth supported by the user equipment.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
US14/383,814 2012-03-09 2013-03-04 Method and apparatus for random access in a system wherein user equipment with different operating bandwidths coexist Abandoned US20150103761A1 (en)

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CN2012100610732A CN103313419A (zh) 2012-03-09 2012-03-09 一种随机接入方法及装置
CN201210061073.2 2012-03-09
PCT/IB2013/000536 WO2013132327A1 (fr) 2012-03-09 2013-03-04 Procédé et appareil pour l'accès aléatoire dans un système dans lequel des équipements d'utilisateur ayant des largeurs de bande différentes coexistent

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US (1) US20150103761A1 (fr)
EP (1) EP2823685A1 (fr)
JP (1) JP2015509687A (fr)
KR (1) KR20140138878A (fr)
CN (1) CN103313419A (fr)
TW (1) TW201404226A (fr)
WO (1) WO2013132327A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150156760A1 (en) * 2012-08-10 2015-06-04 Huawei Technologies Co., Ltd. Random Access Method, Base Station and Terminal
US20160150570A1 (en) * 2013-06-27 2016-05-26 Sharp Kabushiki Kaisha Methods for transmitting and receiving physical random access channel (prach), base station and user equipment
WO2017179784A1 (fr) * 2016-04-14 2017-10-19 엘지전자 주식회사 Procédé d'émission-réception de signal fondé sur une sous-bande dynamique et appareil associé dans un système de communication sans fil
EP3386261A4 (fr) * 2015-12-29 2018-12-05 Huawei Technologies Co., Ltd. Procédé et appareil pour accès aléatoire
WO2022031802A1 (fr) * 2020-08-05 2022-02-10 Google Llc Vérifications de disponibilité pour des technologies d'accès radio ou des ressources radio alternatives
US11343855B2 (en) * 2017-10-20 2022-05-24 Vivo Mobile Communication Co., Ltd. Method and device for random access and terminal
US11683837B2 (en) * 2015-01-30 2023-06-20 Qualcomm Incorporated Random access procedure and broadcast prioritization for machine type communications (MTC)
US12004231B1 (en) * 2021-08-02 2024-06-04 T-Mobile Innovations Llc Non-blind scheduling of a physical downlink control channel (PDCCH) control channel element (CCE) aggregation level (AL) for common search space (CSS)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3061304B1 (fr) * 2013-11-14 2018-08-01 Sony Corporation Système de communications, équipement d'infrastructure, dispositifs et procédé de communications
CN104780617B (zh) * 2014-01-09 2019-09-17 中兴通讯股份有限公司 一种非竞争随机接入方法、节点设备及系统
CN105325045A (zh) * 2014-01-27 2016-02-10 华为技术有限公司 一种窄带传输的方法、设备、基站及用户设备
WO2015142239A1 (fr) * 2014-03-20 2015-09-24 Telefonaktiebolaget L M Ericsson (Publ) Nœud de réseau, équipement utilisateur, et procédés d'accès aléatoire
US20160050667A1 (en) * 2014-08-18 2016-02-18 Samsung Electronics Co., Ltd. Communication on licensed and unlicensed bands
GB2530566A (en) 2014-09-26 2016-03-30 Nec Corp Communication system
CN105764152B (zh) * 2014-12-19 2020-10-27 联想(北京)有限公司 信息处理方法及基站
CN105792380B (zh) * 2014-12-19 2019-10-29 联想(北京)有限公司 信息处理方法及基站
EP3913831A1 (fr) * 2015-01-16 2021-11-24 Samsung Electronics Co., Ltd. Procédé et appareil de transmission d'informations de commande dans un système de communication sans fil
CN105188151B (zh) * 2015-06-12 2018-11-06 北京邮电大学 一种非正交多址随机接入方法、装置及系统
WO2017157152A1 (fr) * 2016-03-15 2017-09-21 中兴通讯股份有限公司 Procédé et appareil de traitement d'accès
CN107197532B (zh) * 2016-03-15 2022-10-28 中兴通讯股份有限公司 接入处理方法及装置
WO2017193403A1 (fr) 2016-05-13 2017-11-16 华为技术有限公司 Procédé, appareil et système de planification
CN107690191A (zh) * 2016-08-05 2018-02-13 电信科学技术研究院 一种非竞争随机接入中资源分配、请求发起方法及装置
EP3550925B1 (fr) 2016-12-08 2020-09-02 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Procédé et dispositif d'accès aléatoire
WO2018120103A1 (fr) * 2016-12-30 2018-07-05 广东欧珀移动通信有限公司 Procédé et appareil pour accès aléatoire
CN108347768B (zh) * 2017-01-24 2024-03-26 华为技术有限公司 前导资源分组方法、前导选择方法，网络设备及终端设备
CN108882373B (zh) * 2017-05-16 2020-11-03 维沃移动通信有限公司 一种资源配置方法、相关设备和系统
CN109286942B (zh) * 2017-07-20 2021-12-14 中国电信股份有限公司 随机接入方法、系统、终端及计算机可读存储介质
CN109963319B (zh) * 2017-12-26 2020-12-29 广东电网有限责任公司电力调度控制中心 一种海量配用电数据分级接入方法
CN110233714B (zh) * 2018-03-06 2022-09-23 成都鼎桥通信技术有限公司 一种lte前导分配方法和装置
US11064549B2 (en) * 2018-08-09 2021-07-13 Qualcomm Incorporated Bandwidth configuration techniques in wireless communications
CN116097837A (zh) * 2020-08-06 2023-05-09 富士通株式会社 信号的发送和接收方法、装置和通信系统

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080232329A1 (en) * 2007-03-21 2008-09-25 Yu-Chih Jen Method and Apparatus for Handling Random Access Procedure in a Wireless Communications System
US20090268666A1 (en) * 2008-04-28 2009-10-29 Lg Electronics Inc. Random access channel preamble selection
US20100278064A1 (en) * 2009-04-30 2010-11-04 Samsung Electronics Co., Ltd. Rach-specific information transmission methods and apparatuses for wireless communication system
US20100322096A1 (en) * 2009-06-23 2010-12-23 Chia-Chun Hsu Method of improving component carrier identification in a random access procedure in a wireless communication system and related communication device
US20110299492A1 (en) * 2010-06-03 2011-12-08 Via Telecom, Inc. Mobile Communications Devices and Transmission Methods for Transmitting Machine Type Communication Data Thereof
US20120082106A1 (en) * 2010-09-30 2012-04-05 Via Telecom, Inc. System and Method for Allocating Physical Random Access Channel Resources
US20130083753A1 (en) * 2011-09-30 2013-04-04 Interdigital Patent Holdings, Inc. Device communication using a reduced channel bandwidth
US20140133433A1 (en) * 2011-07-15 2014-05-15 Lg Electronics Inc. Communication method and wireless device supporting variable bandwidth
US20140241297A1 (en) * 2011-09-23 2014-08-28 Lg Electronics Inc. Method and apparatus for random-accessing in wireless communication system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009105003A1 (fr) * 2008-02-21 2009-08-27 Telefonaktiebolaget Lm Ericsson (Publ) Ajustement de niveau de détection radio pour des signaux de demande sur la base d’une fausse détection observée
CN102026375B (zh) * 2009-09-11 2013-10-23 中国移动通信集团公司 一种系统信息发送的方法、系统和设备
CN101777950A (zh) * 2010-01-20 2010-07-14 上海华为技术有限公司 获取基站带宽的方法、发前导序列的方法及装置和系统
EP2536242B1 (fr) * 2010-02-12 2016-10-12 Gemalto SA Procédé d'accès à un réseau et système permettant d'exécuter des communications du type machine
GB2487907B (en) * 2011-02-04 2015-08-26 Sca Ipla Holdings Inc Telecommunications method and system
US9232540B2 (en) * 2011-09-30 2016-01-05 Qualcomm Incorporated Random access channel design for narrow bandwidth operation in a wide bandwidth system

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080232329A1 (en) * 2007-03-21 2008-09-25 Yu-Chih Jen Method and Apparatus for Handling Random Access Procedure in a Wireless Communications System
US20090268666A1 (en) * 2008-04-28 2009-10-29 Lg Electronics Inc. Random access channel preamble selection
US20100278064A1 (en) * 2009-04-30 2010-11-04 Samsung Electronics Co., Ltd. Rach-specific information transmission methods and apparatuses for wireless communication system
US20100322096A1 (en) * 2009-06-23 2010-12-23 Chia-Chun Hsu Method of improving component carrier identification in a random access procedure in a wireless communication system and related communication device
US20110299492A1 (en) * 2010-06-03 2011-12-08 Via Telecom, Inc. Mobile Communications Devices and Transmission Methods for Transmitting Machine Type Communication Data Thereof
US20120082106A1 (en) * 2010-09-30 2012-04-05 Via Telecom, Inc. System and Method for Allocating Physical Random Access Channel Resources
US20140133433A1 (en) * 2011-07-15 2014-05-15 Lg Electronics Inc. Communication method and wireless device supporting variable bandwidth
US20140241297A1 (en) * 2011-09-23 2014-08-28 Lg Electronics Inc. Method and apparatus for random-accessing in wireless communication system
US20130083753A1 (en) * 2011-09-30 2013-04-04 Interdigital Patent Holdings, Inc. Device communication using a reduced channel bandwidth

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9769831B2 (en) * 2012-08-10 2017-09-19 Huawei Technologies Co., Ltd. Random access method, base station and terminal
US20150156760A1 (en) * 2012-08-10 2015-06-04 Huawei Technologies Co., Ltd. Random Access Method, Base Station and Terminal
US20160150570A1 (en) * 2013-06-27 2016-05-26 Sharp Kabushiki Kaisha Methods for transmitting and receiving physical random access channel (prach), base station and user equipment
US10182457B2 (en) * 2013-06-27 2019-01-15 Sharp Kabushiki Kaisha Methods for transmitting and receiving physical random access channel (PRACH), base station and user equipment
US11683837B2 (en) * 2015-01-30 2023-06-20 Qualcomm Incorporated Random access procedure and broadcast prioritization for machine type communications (MTC)
EP3386261A4 (fr) * 2015-12-29 2018-12-05 Huawei Technologies Co., Ltd. Procédé et appareil pour accès aléatoire
US10772130B2 (en) 2015-12-29 2020-09-08 Huawei Technologies Co., Ltd. Random access procedure for determining uplink transmission capability
CN112911582A (zh) * 2015-12-29 2021-06-04 华为技术有限公司 用于随机接入的方法和装置
US11856608B2 (en) 2015-12-29 2023-12-26 Huawei Technologies Co., Ltd. Random access procedure for determining uplink transmission capability
WO2017179784A1 (fr) * 2016-04-14 2017-10-19 엘지전자 주식회사 Procédé d'émission-réception de signal fondé sur une sous-bande dynamique et appareil associé dans un système de communication sans fil
US11076433B2 (en) 2016-04-14 2021-07-27 Lg Electronics Inc. Dynamic subband-based signal transceiving method and apparatus therefor in wireless communication system
US11343855B2 (en) * 2017-10-20 2022-05-24 Vivo Mobile Communication Co., Ltd. Method and device for random access and terminal
WO2022031802A1 (fr) * 2020-08-05 2022-02-10 Google Llc Vérifications de disponibilité pour des technologies d'accès radio ou des ressources radio alternatives
US12004231B1 (en) * 2021-08-02 2024-06-04 T-Mobile Innovations Llc Non-blind scheduling of a physical downlink control channel (PDCCH) control channel element (CCE) aggregation level (AL) for common search space (CSS)

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KR20140138878A (ko) 2014-12-04
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TW201404226A (zh) 2014-01-16
EP2823685A1 (fr) 2015-01-14
WO2013132327A1 (fr) 2013-09-12

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